私はすでにこのコードを持っていますが、数値のアップロードの進行状況の代わりに、私が欲しいのはグラフィカルなバーです...ここでも問題に気づきました...ファイルを選択しなくても送信をクリックした場合にのみprogressNumberが表示されます..しかしファイルを選択すると、progressNumber は表示されません。
<script type="text/javascript">
function fileSelected() {
var file = document.getElementById('fileToUpload').files[0];
if (file) {
var fileSize = 0;
if (file.size > 1024 * 1024)
fileSize = (Math.round(file.size * 100 / (1024 * 1024)) / 100).toString() + 'MB';
else
fileSize = (Math.round(file.size * 100 / 1024) / 100).toString() + 'KB';
document.getElementById('fileName').innerHTML = 'Name: ' + file.name;
document.getElementById('fileSize').innerHTML = 'Size: ' + fileSize;
// document.getElementById('fileType').innerHTML = 'Type: ' + file.type;
}
}
function uploadFile() {
var fd = new FormData();
fd.append("fileToUpload", document.getElementById('fileToUpload').files[0]);
var xhr = new XMLHttpRequest();
xhr.upload.addEventListener("progress", uploadProgress, false);
xhr.addEventListener("load", uploadComplete, false);
xhr.addEventListener("error", uploadFailed, false);
xhr.addEventListener("abort", uploadCanceled, false);
xhr.open("POST", "thankyou.php");
xhr.send(fd);
return false;
}
function uploadProgress(evt) {
if (evt.lengthComputable) {
var percentComplete = Math.round(evt.loaded * 100 / evt.total);
document.getElementById('progressNumber').innerHTML = percentComplete.toString() + ' % uploading file';
document.getElementById('progress').style.width = percentComplete + '%';
}
else {
document.getElementById('progressNumber').innerHTML = 'unable to compute';
}
}
function uploadComplete(evt) {
/* This event is raised when the server send back a response */
// alert(evt.target.responseText);
}
function uploadFailed(evt) {
alert("There was an error attempting to upload the file.");
}
function uploadCanceled(evt) {
// alert("The upload has been canceled by the user or the browser dropped the connection.");
}
</script>
およびhtmlフォームと入力タグ用
<form id="form1" name = "myform" onsubmit = "return uploadFile()" enctype="multipart/form-data" action = "thankyou.php" method="post" id = "form1" >
<div class="row">
<label for="fileToUpload">Upload File</label>
<input type="file" name="fileToUpload" id="fileToUpload" onchange="fileSelected();" class = "dropzone" required/>
</div>
<p>
<div id="fileName"></div>
<div id="fileSize"></div>
<div id="fileType"></div>
<div id="progressNumber"></div>
<div id="progress-bg" style="width:200px;height:10px;background:#FFF">
<div id="progress" style="height:10px;background:#000"></div>
</div>
<input type="submit" name="uploadFiles" value="Submit">